Shear-table.



A. A. NEAVE.

SHEAR TABLE.

APPLICATION FILED JULY 12, 1912.

Patented Dec. 3, 1912.

3 SHEETS-SHEET 1.

INVENTOR WITNESSES 724414/ 4 MM 413%.1 w

A. A. NEAVE.

SHEAR TABLE.

APPLIGATION FILED JULY 12, 1912,

Patented Dec. 3, 1912.

3 SHEETS-SHEET 2.

INVENTQR Patented Dec. 3, 1912.

3 SHEETS-SHEET 3.

INVENTOR WITNESSES similar views showing ANDREW A. NEAVE,

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0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 MESTA MAfiEINE Patented him. a, rare.

Application filed July 12, 1912. Serial l lo. 709,076.

SHEAR-TABLE.

1l,4l5,73. pecification ct Letters Patent.

To all whom it mag c:

' Be itknown that 1, ANDREW A. NEAVE, a resident of Pittsburgh, Allegheny county, Pennsylvania, have invented a new and useful Improvement in Shear-Tables, of which the following is a full, clear, and exact description, rei'erence being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a View partly in side elevation and partly in vertical section of a shear table embodying my invention; Figs. 2 and 3 are some of the parts in difieren't positions; Fig. d is a detail sectional view of the actuating mechanism; Fig. 5 1s a detail view, hereinafter referred to; and Fig. 6 is a view similar to Fig. 1 but showing a modification.

My invention has relation to shear tables of the class which are capable of being raised and lowered, and also of being moved longitudinally with respect to the shears, the object of the invention being to provide a table of this character, together with actuating mechanism therefor, of simple and etlicient construction and arrangement.

The nature of my invention will be best understoodby reference to the accompanying drawings, in which 1' have shown the preferred embodiment thereof, and which will now he described, it being nremised, however, that various changes may be made in the details of construction and arrangement or the parts by those skilled in the art without departing from the spirit and scope of my invention as defined in the appended claims.

in these drawings, the numeral 2 represents, diagrammatically, a fixed shear blade,

3 movable shear blade, of apowero nerated shear of any usual or well known character.

and 5 designate table sections at the delivery side of the shear machine. The table section 5 is a iii-red section, but the section 4 is capable not only of longitudinal movement toward and away from the shear machine hut also or a tilting movement and or a parallel vertical movement. the table sections as heingot the usual roller form, this being preferred, although they may he of any suitable form. The rollers, with the exceptions hereinafter noted, are driven in any usual or suitable manner.

cylinder 13, the weight 1 have shown and connected to a The table sect-ion e is provided on 'its under side with the longitudinally extending guide openings 6, which are engaged by the'fianged guide rollers 8 mounted on upwardly extending rocker arms 9, which are journaled in suitable bearings 10. The forward rocker carrying the arm 9 also has adepending arm- 11, which is connected by a link 12 with the cylinder 13, which is mounted to reciprocate on suitable guides on abase or bed 14 over one end of a piston or plunger 15. The other rocker has a depending arm 11", which is connected by links 16 with a cross head 17 rigidly connected to the piston or plunger 15. The opposite end of the piston or plunger 15 extends into a fixed cylinder 18,

within which it is arranged to reciprocate. The two cylinders 13 and 18 are connected by the respective pipes 19 and 29 with a suitable source of pressure, such as a hydraulic accumulator. The "pipeltl is provided at a suitable point with a control valve 21, and the pipe 2t also has a control valve 22.

By filling both cylinders 13 and 18 and locking the liquid therein by means or the valves 21 and 22, the table section 1 will be maintained in the in Fig. 1. By releasing the liquid from the of the table will permit its forward end to tilt downwardly into the position shown in dotted lines in Fig. 1, the cylinder 13 sliding backw'ardly over the piston or plunger 15. By releasing the liquid in the cylinder 18 and holding it locked in the cylinder 13. the table section 4. may he caused to fall hodily into the position shown in Fig. 2, the cylinder 13 and nlunger 15 moving hack as a unit. Frz'irn this position. the table can he raised to itoriginal position by admitting liquid to cylinder 18.

For the purpose or moving the table section d longitudinally away from the shear machine to permit the crop ends 01 the pieces to drop through between said table section and the shear frame, 1 provide the cylinders 23 and 24, having a common piston or plunger extending into each 01? them sliding cross-head This cross head is connected by link 26 with a rocker 27 pivoted at 28, and having one oi its arms connected by links 29 with an arm 30, which is loosely mounted on the shaft 10 elevated position shown which forms a fulcrum for the rear-rocker 9 before described. The arm 30 is connected by a link 31 with the forward portion of the table section 4. When power is admitted to the cylinder 24 to move the cross-head 25 ,rearwardly, the pull on the link 24 actuates the rocker 27, and through the link 29 pulls the table section 4 rearwardly into theposition shown in Fig. 3. In this movement, the arm 30 simply acts as a guide for the links 29 and 31. f

When power is admitted into the cylinder 23 to move the cross head 25 forwardly, the table section 4 is moved back to its former position shown in Fig. 1.

In order to permit the rearward movement of the table section 4 in the manner just described, it isnecessary to provide tneans for moving the end roller 5 of the table section 5 out of the-way. For this purpose, the roller 5*, together with the next adjacent roller 5", are journaled in a frame member 32, which is pivoted to turn about 25 the axis 33 of the roller 5 and to cause thls turning movement simultaneously with the movement of the table section 4, the frame section 32 is connected by a link 34 with the cross head 25. As the cross-head 3o moves rearwardly, the frame member 32 'is turned on the axis shown in Fig. 3, in which the roll 5 isbelow the roll 5. V

5 and 5 makes it necessary to provide special 35 gearing for driving them. The roll 5 is driven from the shaft 35 (see Fig. 5), which drives the. series of rolls; and the roll 5 is driven by the intermediate gears 36 from the shaft to the roll 5*. e V

w By means of the movable roll 5, I provide for a continuous roll table in both the forward and backward positions of the table section 4, thus eliminating the gap which it has usually been necessary to leave between 5 the two sections when the movable section is in its forward position.

Instead of using hydraulic cylindersas the motive devices, it is obviou that various other forms of motors may be employed.

For instance, in Fi 6 I have shown an arrangement in which the movable table section 4 is supported on the rockers 9 One of the rockers 9% is fulcrumed at 34* upon one arm of a weight lever 35, which in turn has a fulcrum at 36 on a suitable support 3.7. The lower arm of this rocker is connected by link 38 with a rocker 39 fixed to a shaft 40 and having its other arm connected by link 41 with the other rocker 9.

so The shaft 40 has a weight arm 42 carrying a fixed weight 43. The lever 35* has an adjustable weight 44 which is arranged to be moved back and orth thereon by an electric motor 45 acting through the gears 45,

link 47, lever arm 48 and link49.

33 into the position This movement of the rolls changes can be made, without When the weight 44 is in the position shown in full lines in Fig. 6, it is more than sufficient to support the weight of the entire. table plus the additional pressure needed to depress the table. When the pressure of the piece being shearedis brought to bear on the front end of the table, the forward rocker 9" will turn on pivot 34 and through link 38 and lever 39 rotate fixed weight 43 around fulcrum. 40, which, by connecting link 41, causes lever 9 at the rear of the table to rotate around its pivot, thus bringing-the entire table down parallel. When the down pressure on the forward end of the table is released, the fixed counterweight 43 brings the table to its former'position'.

By moving counterweight 44 to the position shown in dotted lines, its effective lever arm is shortened and is now only suflicient to balance the forwardend of the table. 35

hen applying pressure to the forward end of the table, the counterweight 43 is now more effective than counterweight 44 and refusesto move. The lever 9 is kept from rotating at pivot 34* by link 38 and it now my moves as a unit with lever arm 35 and rotates at pivot 36, allowing only-the forward end of the table to tilt. When the applied pressure is removed, the counterweight" 44 returns the front end of the table to its nor- 5 mal position.

It will be obvious that the exact arrange ment of the weights and the actuating connections may be widely varied; that other motive devices may be employed for-controlling the table movements, and that other departing from the spirit and scope of my invention as defined in the claims. In these claims, the term motive devices is to be understood as including either a weight or weights, or the combination with a weight or weights of other motive means.

My invention provides a movable shear table section and actuating mechanism therefor-which is simple in its construction and mode of operation; which can be made to readily move downwardly under the action of the descending shear blade, and which can be readily driven by a bodily up and down movement, and which can be easily moved sufiiciently away from the shear machine to permit the crop endsto drop through between the ends of the movable section and the shear frame. These several operations can be controlled by the simple manipulation of the valves controlling the several power cylinders employed. I

I claim 1. A shear table mounted for longitudi- 125 nal movement, for bodily vertical movement, and also for vertical tilting movement, rock ers constituting the mounting, a motive device connected to the rockers to effect the vertical and tilting movements of the table, 1

macaw and a motive device connected to the table for effecting its longitudinal movement; substantially as described.

2. A vertically movable shear table, movable supporting members for said table, and a motive device connected to said members, said motive device. comprising two power cylinders, a piston or plunger having its opposite end portions extending into the respective-cylinders, and means for independently locking and releasing the operating fluid in said cylinders; substantially as described.

3. A vertically movable shear table, rockers upon which the table is mounted, a cross head having actuating connections with the rockers, power cylinders for moving the cross-head 1n opposite directions, and means whereby the operatlng fluid may be inde- "pendent-1y locked in or released from the respective cylinders; substantially as described.

4. A vertically movable shear table, movable supporting members therefor, and an actuating device for said members and table, said device comprising a fixed cylinder, a movable cylinder, a piston or plunger extending into both cylinders, connections between the piston or plunger and one of said members, and connections between the movable cylinder and the other member; substantially as described.

5. A shear table comprising a fixed section and a longitudinally movable section, the fixed section having an end member movable out of the ath of movement of the movable section; su mtantially as described.

6. A shear table comprising a fixed roller section, and a longitudinally movable roller section. the fixed section having its end roll movable out of the path of movement of the movable section; substantially as described.

7. A shear table having a fixed section, and a longitudinally movable section, the fixed section having a pivotal end portion, substantially as described.

8. A shear table having a fixed section and a longitudinally movable section, the fixed section having a pivotal end portion, together With connections for simultaneously moving the movable section and the pivotal end portion; substantially as described.

9. A shear .table having a fixed table section anda longitudinally movable table section, the fixed table section having a movable end portion. and power means for simultaneously actuating the movable table section and the movable end portion of the fixed section; substantially as described.

In testimony whereof, I have hereunto set my hand.

ANDREW A. NEAVE.

Witnesses:

LLOYD Jones, E. W. MIKADRAN. 

